loose, with dozens breaking through. they rushed to christopher stevens's bunker, they started the fire, unable to see or breathe through heavy smoke, the ambassador and one bodyguard tried to get out through a bathroom window. the agent got out, then lost stevens in the thick, black smoke, his body turned up later. they identified him only hours >>> i had not seen such an attack, nor in my diplomatic time >> reporter: today, the white house acknowledges mistakes. >> there is no question when four american personnel are killed in an attack on the diplomatic security, that the facility was not adequate >> reporter: mitt romney mentioned a conversation with glenn doherty, one of the former navy s.e.a.l.s killed in the attack. >> i met some wonderful people, one a former navy s.e.a.l. >> reporter: later, the campaign said he wouldn't mention it again. glen doherty's mother said he shouldn't make that a part of the political agenda. tonight, they accused them of misleading, and demanded straight answers, the white house is trying to find answers with both the state department and the review